Fully integrated ballast IC
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United States of America Patent
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-
Apr 3, 2001
Grant Date -
N/A
app pub date -
Jan 5, 1999
filing date -
Jan 5, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A ballast controller integrated circuit which executes a specific set of instructions via an integrated state diagram architecture to control the fluorescent lamp and protect the ballast. The state diagram architecture controls powering up and down of the IC and the half-bridge circuit driven by the IC, preheating and striking of the lamp, running of the lamp, sensing for numerous possible fault conditions, and recovering from these fault conditions based on the normal maintenance of a lamp.
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